学步园

#include<stdio.h>
#include<string.h>
void myReverse(char* str){
  int i,j;
  int len=strlen(str);
  if(len%2){
    i=len/2;
    j=len/2;
  }
  else{
    i=len/2-1;
    j=len/2;
  }
  for(;i>=0&&j<len;i--,j++){
    char tmp=str[i];
    str[i]=str[j];
    str[j]=tmp;
  }
}
int isPNumber(char* str){
  int i,j;
  int len=strlen(str);
  if(len%2){
    i=len/2;
    j=len/2;
  }
  else{
    i=len/2-1;
    j=len/2;
  }
  for(;i>=0&&j<len;i--,j++){
    if(str[i]!=str[j]) return 0;
  }
  return 1;
}
void strAdd(char* a,char* b,char* sum){
  int i,jin=0;
  int len=strlen(a);
  for(i=0;i<len;i++){
    sum[i]='0'+(a[i]-'0'+b[i]-'0'+jin)%10;
    jin=(a[i]-'0'+b[i]-'0'+jin)/10;
  }
  if(jin){
    sum[len]='0'+jin;
    sum[len+1]='\0';
  }
  else{
    sum[len]='\0';
  }
}
int main(){
  int i,step;
  char num[10000],rnum[10000],sum[10000];
  scanf("%s %d",num,&step);
  if(isPNumber(num)){
    printf("%s\n0\n",num);
    return 0;
  }
  for(i=1;i<=step;i++){
    strcpy(rnum,num);
    myReverse(rnum);
    strAdd(num,rnum,sum);
    if(isPNumber(sum)){
      printf("%s\n%d\n",sum,i);
      break;
    }
    strcpy(num,sum);

  }
  if(i==step+1){
    myReverse(sum);
    printf("%s\n%d\n",sum,step);
  }
  return 0;
}